cndaimin opened a new pull request #3842: URL: https://github.com/apache/hadoop/pull/3842
When we examining the FUSE IO performance on HDFS, we found that the simultaneous IO requests number are limited to a fixed number, like 12. This limitation makes the IO performance on FUSE client quite unacceptable. We did some research on this and inspired by the article Performance and Resource Utilization of FUSE User-Space File Systems, clearly the FUSE parameter 'max_background' decides the simultaneous IO requests number, which is 12 by default. We add 'max_background' to fuse_dfs mount options, the FUSE kernel will take effect when an option value is given. To see whether it works: # cat /sys/fs/fuse/connections/55/max_background 100 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
